Professor Chris Elliott, the director of the Institute of Global Food Security at Queen's University, is warning the garlic powder from your grocery stores could be chalk or talcum powder disguised as the real thing.

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Elliott says he was tipped off when he noticed that global garlic sales are steady, even though last year huge garlic crops in China were killed by bad weather.

He's warning that the garlic powder we buy in stores could have something else mixed in to make up for the supply gaps. He studied the garlic supply chain with other researchers and can't explain where this extra garlic came from.